Receiver R 109 T.
Receiver R 109 T. This British receiver was used in conjunction with the Wireless Set no 76 transmitter. This transmitter no 76 was crystal controlled and only suitable for CW. The T stands for tropicalised, which means they are suitable for operating in the tropic theature.
Both, the R109 and the Wireless tranmitter 76, were used for the REAR LINK radio nets with the headquarters in England and the 30st Corps at Groesbeek . Antennas were longwires. The communications worked in the beginning often very well. Later not, because most of the crystals got defected and had to be replaced. Also many were destroyed, together with the transmitter by heavy enemy fire. Replacement of the crystals , which were dropped, mostly became behind enemy lines. The functioning of these radio’s, because of sky wave contact, are described in the post of the Wireless Set no 22.
Note, that the combination of Wireless transmitter no 76/receiver R109 was also in use by The Public Relation Group in a different radio net, only CW mode. This by the Royal Corps of Signals, the Phantom group. They reported the progress of the battle to the BBC in London.
At the last days, because this radionet was still functioning well and other Rear Links with WS 76 and R109 not well anymore, most radio’s were destroyed, they decided to use the net with their radio’s from this Public Relations group, by lack of other transmitter no 76, for communication with the headquarters.
The two pictures above:
At the first picture, is to be seen the wireless operator at the left, with his headphones still on his head, giving fire support to the airborne soldier right. This in the southern part of the perimeter around Hotel Hartenstein.
At the second picture, the transmitter Wireless transmitter 76 at the right with the receiver R109 at the left, also in the garden of the perimeter around Hotel hartenstein, Oosterbeek. Probably this radio set was in use at that moment, by The Public Relation radio net.
The pictures below, shows, that my receiver is in excellent, original condition.
But tropicalised versions, mostly are in well estate.
Left the whole receiver part. In the mid the service chassis with spare valves and at the right the vibrator powersupply working on 6 volts DC.
Receiver part with spare vibrator for the power supply.
Beneath the chassis. In the mid the service chassis.
Inside the case, with the schematic diagram for service.
Here my receiver R 109 A with the Wireless Transmitter no 76 under test in the back of my garden on a sunny summer day in 2015. I used a vertical antenna of 22 inch (about 5 meters). The antenna consist of 5 aerial rods, type F, with a counterpoise. Lots of amateur stations were heard on 40 meters in CW and SSB.